monitoring analysis and performance tools
Analysis and performance of high efficiency synchronous reluctance machines
Ngày tải lên :
05/09/2013, 16:30
... Lawrenson, P.J and Agu, L.A Theory and Performance of Polyphase Reluctance Machines Proc IEE, 111(8), pp 1435-1445, 1964 [2] Lawrenson, P.J and Gupta, S.K Developments in the Performance and Theory ... A.J.O., and Menzies, R.W and Anderson, A.F Theory and Performance of Reluctance Motors With Axially Laminated Anisotropic Rotors Proc IEE, 118(7), pp 887-894, 1971 [4] Cruickshank, A.I.O and Menzies, ... laminated or a combination of both It has been due to obvious advantages in performance and commercial manufacturing Analysis and performance The principle of operation of reluctance synchronous machines...
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Power Quality Monitoring Analysis and Enhancement Part 1 potx
Ngày tải lên :
19/06/2014, 11:20
... Cantabria (UC), Santander, Spain Ramesh Bansal The University of Queensland, Australia Part Power Quality Monitoring, Classification, Measurements, and Analysis Power Quality Monitoring Kazem Mazlumi ... the problems and find solutions Although the Power Quality – Monitoring, Analysis and Enhancement power quality monitoring relies on measuring various parameters, only voltage sags and locating ... with Distributed and Renewable Energy Sources 61 Andrzej Nowakowski, Aleksander Lisowiec and Zdzisław Kołodziejczyk Chapter Application of Signal Processing in Power Quality Monitoring 77 Zahra...
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Power Quality Monitoring Analysis and Enhancement Part 2 potx
Ngày tải lên :
19/06/2014, 11:20
... Where c j and d j are the scaling and wavelet coefficients indexed by j, and both functions must be orthonormal 24 Power Quality – Monitoring, Analysis and Enhancement The wavelet and scaling ... Power Quality – Monitoring, Analysis and Enhancement SLG fault exposed area of bus 35 contains buses 30 and 32 Also, the 0.8 pu three phase fault exposed area contains buses 30, 32, and 38 The SLG ... practice (Mix & Olejniczak, 2003) 26 Power Quality – Monitoring, Analysis and Enhancement % with f as the original signal; N the length of f; and g and h the wavelet filters: % for one decomposition...
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Power Quality Monitoring Analysis and Enhancement Part 3 docx
Ngày tải lên :
19/06/2014, 11:20
... Power Quality Monitoring in a System with Distributed and Renewable Energy Sources Andrzej Nowakowski, Aleksander Lisowiec and Zdzisław Kołodziejczyk Tele -and Radio Research Institute Poland Introduction ... Quality – Monitoring, Analysis and Enhancement Case - Balanced and sinusoidal system: In this case, the oscillatory, the negative sequence, and the zero sequence terms of both the real and the ... power, and and are de reactive and distortion power defined by Budeanu, respectively The definitions described by Eq (66) and Eq (67) are identical and produce correct results for balanced load and...
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Power Quality Monitoring Analysis and Enhancement Part 4 pptx
Ngày tải lên :
19/06/2014, 11:20
... Monitoring, Analysis and Enhancement disturbances that may be encountered The principal standards in this field are IEC 61000, EN 50160, and IEEE 1159 Standards are essential for manufacturers and users ... software and power quality analyzers contain more elaborate spectrum analysis and statistical software Power quality analyzers also have wider input bandwidth to measure accurately harmonic and interharmonic ... magnitude of the greater of the values of N and M This is one of the many reasons why the values of N and M should be 68 Power Quality – Monitoring, Analysis and Enhancement chosen as low as possible...
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Power Quality Monitoring Analysis and Enhancement Part 5 pot
Ngày tải lên :
19/06/2014, 11:20
... product of their standard deviations The population correlation coefficient ρX,Y between two random variables X and Y with expected values μX and μY and standard deviations σX and σY is defined ... 94 Power Quality – Monitoring, Analysis and Enhancement where r : correlation coefficient X, Y : the means of X and Y respectively S X , S Y : the standard deviation of X and Y respectively The ... information and collinear candidate inputs in addition to the irrelevant candidates This technique is done in two steps At first if the mutual information between a candidate variable and output...
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Power Quality Monitoring Analysis and Enhancement Part 6 docx
Ngày tải lên :
19/06/2014, 11:20
... rise time, V1 and V2 are the values obtained at low sampling rate and respectively at increased sampling rate, Er1 and Er2 are the errors between V1 and V2 and respectively Ve and Er1/Er2 is ... plots are obtained amplitude, frequency and time information in order to detect, localize and classify the disturbance 114 Power Quality – Monitoring, Analysis and Enhancement Fig 12 S-transform ... 1928-1935 7 Pre-Processing Tools and Intelligent Systems Applied to Power Quality Analysis Ricardo A S Fernandes1, Ricardo A L Rabêlo1, Daniel Barbosa2, Mário Oleskovicz1 and Ivan Nunes da Silva1...
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Power Quality Monitoring Analysis and Enhancement Part 7 doc
Ngày tải lên :
19/06/2014, 11:20
... 138 Power Quality – Monitoring, Analysis and Enhancement factors and voltage sags and swells, especially in case of three-phase four-wire circuits ... collective and effective currents and voltages by means of symmetrical components, the following relations could be extracted from (Willems et al 2005): 144 Power Quality – Monitoring, Analysis and ... 154 Power Quality – Monitoring, Analysis and Enhancement Equation (30) finally provides the relationship between the measured voltage between the neutral and the virtual point and the zero-sequence...
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Power Quality Monitoring Analysis and Enhancement Part 8 pdf
Ngày tải lên :
19/06/2014, 11:20
... on: the analysis of voltage and current waveforms; the analysis of the system operation trajectory during the dip; the analysis of the equivalent electric circuit; the analysis of power and energy ... disturbance; the analysis of voltages; asymmetry factor value and symmetric component phase angle and algorithms for the operation of protection 174 Power Quality – Monitoring, Analysis and Enhancement ... sources ES and EC In order to find the answer has been defined the voltage value at an arbitrary point m between sources ES and EC (Fig 2): 168 Power Quality – Monitoring, Analysis and Enhancement...
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Power Quality Monitoring Analysis and Enhancement Part 9 docx
Ngày tải lên :
19/06/2014, 11:20
... An example of changes in the flicker severity and the active and reactive power ― phase L1 (diagram in (a)) 190 Power Quality – Monitoring, Analysis and Enhancement 4.1 Criterion of voltage fluctuations ... its excellent performance of local time-frequency analysis, which means that it has higher frequency resolution in low frequency bands and lower time resolution in high frequency bands Because ... ) × 100% (16) 206 Power Quality – Monitoring, Analysis and Enhancement where Ad=A1-A0 and A1, A0 are the amplitude spectrum of the disturbance signal and pure sinusoid signal respectively...
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Power Quality Monitoring Analysis and Enhancement Part 10 pot
Ngày tải lên :
19/06/2014, 11:20
... steady values of IRMS and IWDR are 0.707 and There are also two peaks in the IHDR and IAF corresponding to the start and end time, which are 28.2% and 190Hz at 0.082s and 22.3% and 109Hz at 0.313s ... same rms value and is opposite to that on the T phase: I RT = − I TR (16) 224 Power Quality – Monitoring, Analysis and Enhancement a) b) Fig Inductive load supplied between T and R phases Now ... having the capacitances C1 and C2 and inductance L2 have to allow the control of these values according to load variation 226 Power Quality – Monitoring, Analysis and Enhancement a) b) Fig Simplified...
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Power Quality Monitoring Analysis and Enhancement Part 11 ppt
Ngày tải lên :
19/06/2014, 11:20
... capable of withstanding the extreme conditions that are impingingly demanded for the new heat sinks Power electronics and optoelectronics demand thermal conductivities (TC) above 350 W/mK and 450 W/mK ... layer, and from 2.8 to 8% for the SiC0.03 layer At temperatures 20–600°C, in these layers dominate the long and weak Si−C-bonds, which absorb at frequencies of 700 and 750 cm–1 (Fig 25d-f, curves and ... C- and C−Si-clusters, made basing the analysis of IR spectra Analysis of the behavior of the curves in Fig 26 may be interesting from the point of studying the influence of decay of clusters and...
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Power Quality Monitoring Analysis and Enhancement Part 12 pot
Ngày tải lên :
19/06/2014, 11:20
... mode has been selected by the 270 Power Quality – Monitoring, Analysis and Enhancement Embedded MATLAB function, and after this time, both the CM and the FCM modes have been selected as well Also, ... are 2TS = 0.001 [sec] and 2Tch = 0.001 [sec] , and that their magnitudes are TS and Tch , respectively In Fig 15, the steady state line voltage and the current of loads and are shown Fig 16 shows ... calculated and applied to the inverter If the phasor voltage of the R-L load 274 Power Quality – Monitoring, Analysis and Enhancement (resulting only from the generator) before and after the...
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Power Quality Monitoring Analysis and Enhancement Part 13 potx
Ngày tải lên :
19/06/2014, 11:20
... between the series inverter and the transformer 308 Power Quality – Monitoring, Analysis and Enhancement and the high voltage side(C1,C2 and C3), when it is placed in low voltage side, high order harmonics ... profiles for phase ‘c’: One SVC installed at bus 5, bus 4, and two SVC installed at buses: 4, 298 Power Quality – Monitoring, Analysis and Enhancement Voltage Magnitude Negative sequence 4.2 Case ... modelization: a tool for optimal location and control of FACTS devices in unbalanced power systems, The 32nd Annual 304 Power Quality – Monitoring, Analysis and Enhancement Conference of the IEEE...
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Power Quality Monitoring Analysis and Enhancement Part 14 pptx
Ngày tải lên :
19/06/2014, 11:20
... System a) b) Fig FFT Analysis for Voltage a) without or b) with Capacitors Filter 317 318 Power Quality – Monitoring, Analysis and Enhancement a) b) Fig a) Balanced Voltages Swells, and b) Load Voltages ... Quality – Monitoring, Analysis and Enhancement a) b) c) Fig 11 a) Balanced Voltages Swells (50V/div), b) Compensation of balanced Voltages Swells (50V/div), and c) injection Voltages (50V/div) Performance ... Conference on Transmission and Distribution, 1999,Vol pp 585-589 324 Power Quality – Monitoring, Analysis and Enhancement Banaei M.R., Hosseini S.H., Khanmohamadi S and Gharehpetian G.B.,Verification...
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Power Quality Monitoring Analysis and Enhancement Part 15 pptx
Ngày tải lên :
19/06/2014, 11:20
... 338 Power Quality – Monitoring, Analysis and Enhancement Fault Location bus 22 is considered as the weakest bus in this group and in the system It is considered as the most ... bus 22 is reduced from 61.7% to 23.4% But the 340 Power Quality – Monitoring, Analysis and Enhancement improvement of voltage sag performance is accompanied by an increase in system losses, where ... magnitudes of system buses at steady state load flow and during three phase fault at bus 22 after reconfiguration 342 Power Quality – Monitoring, Analysis and Enhancement Voltage magnitude pu 1.5 0.5...
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Power Quality Monitoring Analysis and Enhancement Part 16 docx
Ngày tải lên :
19/06/2014, 11:20
... generator, propulsion induction motor, and power inverter will be considered 364 Power Quality – Monitoring, Analysis and Enhancement References Ashish Ahuja, Sanjoy Das, and Anil Pahwa, Fellow, IEEE, ... Systems Operation and Planning, May 22-26, 2005, Cape Verde, pp.98-102, vol-1 Mukwanga W Siti, Dan Valentin Nicolae, Adisa A Jimoh, Member, IEEE, and Abhisek Ukil, 2007, Reconfiguration and Load balancing ... and Load balancing in the LV and MV Distribution Networks for Optimal Performance IEEE transactions on power delivery, vol 22, no 4, pp 11281135 Nagata T., Sasaki H., and Yokoyama R., 1995, Power...
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Báo cáo hóa học: " Research Article Design, Analysis, and Performance of a Noise Modulated Covert Communications System" ppt
Ngày tải lên :
21/06/2014, 23:20
... the bandwidth of m(t) is very small compared with H(t) We assume that the signal bandwidth of V (t) and H(t) (hence the bandwidth of V (t) and H(t)) is BS , and that the bandwidth of nV (t) and ... term) and a zero-mean band-limited Gaussian with the same power and frequency range is shown in Figure In the simulation, the bandwidth of bandpass filter is 40 MHz (BL = 20 MHz), the bandwidth ... results in (25), and the results are shown in Figures and In the simulation, both the SNRV and the SNRH terms are equal, and the bandwidth of the antenna is 10 MHz wider than the bandwidth of the...
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POWER QUALITY – MONITORING, ANALYSIS AND ENHANCEMENT pptx
Ngày tải lên :
26/06/2014, 23:20
... Where c j and d j are the scaling and wavelet coefficients indexed by j, and both functions must be orthonormal 24 Power Quality – Monitoring, Analysis and Enhancement The wavelet and scaling ... the problems and find solutions Although the Power Quality – Monitoring, Analysis and Enhancement power quality monitoring relies on measuring various parameters, only voltage sags and locating ... Cantabria (UC), Santander, Spain Ramesh Bansal The University of Queensland, Australia Part Power Quality Monitoring, Classification, Measurements, and Analysis Power Quality Monitoring Kazem Mazlumi...
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Design, analysis, and performance evaluation for handshaking based MAC protocols in underwater acoustic networks
Ngày tải lên :
09/09/2015, 18:49
... successful handshake In general, any handshaking-based protocol design should also consider the narrow bandwidth and low data rate characteristics; thus, a single-channel MAC design is desired, and the ... terrestrial MAC protocols for underwater Shahabudeen and Chitre [28] study the performance of both Aloha and handshaking-based protocols, along with orthogonal and non-orthogonal physical layer models In ... the Aloha-based and handshaking-based MAC protocols In [44], Vieira et al analyze the throughput performance of pure Aloha and slotted Aloha in long propagation delay environment, and show that...
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